Gitlab-CI : Test Job is failing - mysql

Question

I'm currently writing a .gitlab-ci.yml file to automate the build, test, package, and deployment of my application, but the build job is passing, but the other jobs (test, deployment) are failing.
My app is a Springboot web app, with a Mysql Database to store the data and I'm using maven to build the project.
Below is my .gitlab-ci.yml file
before_script:
- echo "Execute scripts which are required to bootstrap the application. !"
after_script:
- echo "Clean up activity can be done here !."
stages:
- build
- test
- package
- deploy
variables:
MAVEN_CLI_OPTS: "--batch-mode"
MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
cache:
paths:
- .m2/repository/
- target/
build:
stage: build
image: maven:latest
script:
- mvn $MAVEN_CLI_OPTS clean compile
test:
stage: test
image: maven:latest
script:
- mvn $MAVEN_CLI_OPTS test
package:
stage: package
image: maven:latest
script:
- mvn $MAVEN_CLI_OPTS package
artifacts:
paths: [target/basecamp-0.0.1.war]
deploy_test:
stage: deploy
script:
- echo "######## To be defined ########"
environment: staging
deploy_prod:
stage: deploy
script:
- echo "######## To be defined ########"
only:
- master
environment: production
The error I'm receiving is the following:
2017-12-23 10:00:33.854 WARN 65 --- [ main] o.a.tomcat.jdbc.pool.ConnectionPool : maxIdle is larger than maxActive, setting maxIdle to: 50
2017-12-23 10:00:34.567 ERROR 65 --- [ main] o.a.tomcat.jdbc.pool.ConnectionPool : Unable to create initial connections of pool.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago.
The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2222)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2017)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:779)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
Could you please know what the issue is ?
Thanks,
G.

Answer 1

Find your Spring context test and disable it (e.g. comment it out or use JUnit's #Ignore on the test classfor a new try for your pipeline. The text may look like:
#RunWith(SpringRunner.class)
#SpringBootTest
public class YourApplicationTest {
#Test
public void contextLoads() {
}
}
Your exception is because thrown because your database can't be accessed during your tests. A detailed explanation and some trouble shooting can be found here: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Answer 2

Well ok, it's a bit lately... but i assume you have no MySQL database for your build process (integration tests). Thats why you get a CommunicationsException. I've got the same problem. I try to setup a gitlab-pipeline, which can execute integration tests (not workin' yet)
That's what i've found
https://docs.gitlab.com/ce/ci/services/mysql.html
https://gitlab.com/gitlab-examples/mysql